Which of the following organisms grows best at 42°C?
a. Streptococcus pneumonia
b. Haemophilus influenza
c. Neisseria gonorrhoeae
d. Campylobacter jejuni
D
C. jejuni grows best at 42°C. The remaining organisms are fastidious and require increased oxygen concentrations at 35° to 37°C.
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A PCR assay has been developed for the detection of the bacterium (Borrelia burgdorferi) that causes Lyme disease. Unfortunately this method cannot differentiate between an active disease and a treated or inactive disease
Indicate whether the statement is true or false.
Among flowering plants, 30% to 80% of existing species are polyploidy somewhere within their evolutionary history
A. true B. false
A species whose effect on biological diversity is disproportionate to their own abundance is termed:
a. predator. b. keystone. c. carnivore. d. producer. e. herbivore.
Why is it important that humans attempt to control their numbers and begin to identify renewable resources?
What will be an ideal response?